Abstract: A combat training system which includes individual processing pods on each aircraft or combat platform. The pods use signals from GPS satellites to determine the position of the respective aircraft, communicate to signal ordnance launch, and determine hits or misses based upon stored missile models. The combat training system further accommodates electronic warfare training. Jamming indicators, including real or simulated jamming signals, are transmitted by a weapons platform or it corresponding pod. The receiving platform adjusts it own real or simulated transmission based upon the received transmission signal. Calculations of hits or misses are determined by the effects of the jamming.

Abstract: A combat training system which includes individual navigation, communications and processing pods on each aircraft or combat platform. The pods use signals from GPS satellites to determine the position of the respective aircraft. Ordnance launch information is transmitted from an attack aircraft or other weapons platform to the target aircraft or other target platform. A target platform uses a trajectory model for the specific type of ordnance for determining the trajectory and the hit or miss of the ordnance. After the mission is completed, the recorded flight data is combined in a ground computer for reconstruction, review and training reinforcement.

Abstract: An X, Y, Z (and .theta.) article positioner and method are disclosed in which two axial elements, one inclined at an angle .alpha. and the other inclined at an angle -.alpha., are utilized in conjunction with each other to accomplish moves in a pure X or pure Z direction or a combination thereof. Each axial element is driven by a lead screw, which in turn is driven by a motor. Pure X movement is achieved by driving the lead screws the same amount, at the same rate, in the same direction. Conversely, to achieve a pure Z movement, the two lead screws are driven the same amount, at the same rate, but in opposite directions. In the preferred embodiment, three superposed and independently driven wedges are used to provide the desired single axis or combinational axis movement to position a workpiece in X, Y and Z with rotational movement of the three wedges providing .theta. axis positioning.

Abstract: A chain conveyor assembly wherein the conveyor chain is constructed to enable the chain to be flexed in two dimensions, e.g., about horizontal and vertical axes, and is designed to convey heavy loads in a stable manner despite the use of a simple and economical conveyor chain. In accordance with a preferred embodiment, the chain conveyor assembly is comprised of a conveyor chain that is formed of a series of wheel units, a guide track arrangement providing surfaces upon which wheels of the wheel units ride, a drive arrangement for driving the conveyor chain, and self-supporting trays for conveying of articles thereon. Each of the trays is coupled to a drive link arrangement that is used to interconnect successive wheel units together and by which the conveyor chain is driven by the drive arrangement.

Abstract: Upper and lower reducing rolls are mounted within a mill housing for rotation about their axes and for parallel movement. Actuating cylinders force the upper reducing roll downward toward the lower reducing roll to effect a separation force on a workpiece that is placed therebetween. Four direct drive motors, one directly coupled to each end of the upper and lower reducing rolls, counter-rotate the reducing rolls to drive the workpiece therebetween. The motors are synchronized within a close tolerance of a set speed to prevent torsion of one end of the reducing rolls relative to the opposite end. Preferably, the rolling mill includes closely enclosed backing rolls engaging the reducing rolls to prevent deflection of the reducing rolls under load. This allows the rolling mill to produce a flat workpiece over a wide range of separation forces by means of cylindrical reducing rolls.

Abstract: A welding head is mounted for movement relative to a fixed base about a plurality of axes. A laser beam, is transmitted from a laser generator to the welding head by an axially flexible but torsionally rigid transmission tube including one or more optically transmitting fibers. The transmission tube is rotatably mounted on the welding head for free rotation about the axis of the emitted laser beam. A lens or other focusing means is provided to focus the laser beam relative to the workpiece, and moving means is provided to move the welding head relative to the laser generating means and the fixed base. A mini-computer or other control means allows control of the moving means to direct the laser beam along the workpiece in a predetermined path. An apertured hood provides protection for the focusing means, and an optional removable probe member provides assistance in programming the apparatus.

Abstract: A metal deposition process and apparatus is used to surface materials and includes a power supply connected to electrode wires and to the workpiece to establish a wire arc between the electrodes and a substrate arc between the positive electrode and the workpiece.

Abstract: A length of conduit is coupled at its ends to a heat sink. A pair of thermocouples are joined to the conduit at spaced points intermediate the ends of the conduit. A closed loop of heat conductive material contacts the conduit midway between the thermocouples. The conductive material is heated, and heat is conducted to the conduit. The thermocouples produce outputs representative of the flow of fluid through the conduit.

Abstract: A precision positioning device with a pair of relatively movable plates defining a carriage for four relatively movable guides. A centering port having a rectangular profile is formed by the guides which are constrained for mutually coating movement on the plates. The relative positions of the movable plates define the geometric shape of the centering port and the relative locations of the guides determine the size of the centering port. A pedestal configured to carry the article to be centered is positioned at the center of the centering port. A driver momentarily moves the guides and opens the centering port for reception of the article. Bias elements urge the guides against the item for centering the article on the collet.

Abstract: A length of conduit is coupled at its ends to a heat sink. A pair of thermocouples are joined to the conduit at spaced points intermediate the ends of the conduit. A conductive post is connected at one of its ends to the heat sink and its other end is joined to a location on the conduit, midway between the thermocouples, by conductive material having a higher electrical resistance than both of the joined elements. A coil arrangement is associated with the post and is energized to cause heating current to pass through the post, the high resistance conductive material and the conduit. The heat generated by the flow of heating current is concentrated at the midpoint between the thermocouples. The thermocouples produce outputs representative of the flow of fluid through the conduit.

Abstract: In a system for aligning successive configurations of minute semiconductors during manufacture, any selected configuration is carried on a precision X,Y,.theta. table, which is under the automatic control of (1) a standard television camera that is subject to conventional geometrical and shading distortions, (2) pattern-recognition and motor-control circuitry that corrects these distortions so that precision alignment is possible, and (3) a monitor including a television viewing screen for supervising the system.

Abstract: A method for assembling a large massive steel shell is disclosed for housing a nuclear reactor while having sufficient strength to contain an explosion of such nuclear reactor. The shell is formed of large heavy gauge metal plates which are welded to each other to form a large sphere. Locating and supporting rings are mounted concentrically on a base. The rings increase in height from the center of the sphere to support and locate correspondingly higher annular segments of the sphere. The rings are erected and positioned with precisely adjustable tie rods so that the annular upper edge of the rings have a correspondingly accurately known position with respect to the annular sphere segments to be supported by the rings. The large heavy plate segments are then mounted on the rings and welded together to form a lower spherical portion whose spherical shape closely conforms to that desired for the sphere.

Abstract: A precision centering device with a pair of relatively movable plates forming a guideway for four relatively movable guides. A tapered centering port having a rectangular profile is formed by the guides which are constrained for mutual coacting movement by the plates. The relative positions of the movable plates define the geometric shape of the centering port and the relative locations of the guides determine the size of the centering port. A reciprocating collet configured to carry a semiconductor chip is received within the centering port at the center thereof. As the collet moves downwardly, the chip is guided through the tapered port and is centered on the collet.

Abstract: Variations in the amplitude-frequency response characteristic of a loudspeaker are compensated by a drive circuit in which an audio input signal is summed with a delayed signal derived from the input signal to provide a drive signal for the loudspeaker. The delayed signal is derived by discrete time filtering and may be formed by storing successively sampled values of the input or drive signal in either digital or analog form, and subsequently recalling the stored values in sequence, or by passing the input or drive signal through a series of all-pass phase-shift filters.

Abstract: Variations in the amplitude-frequency response characteristic of a loudspeaker are compensated by a drive circuit in which an audio input signal is summed with a plurality of delayed replicas of the input signal to provide a drive signal for the loudspeaker. The delayed replicas are derived by discrete time filtering. Noise reduction techniques applied to the least delayed of the plurality of delay signals substantially improves the S/N ratio in the drive signal.

Abstract: A microwave system is disclosed for simultaneous amplification and radiation of CW and pulsed signals wherein signals from a CW amplifier tube and a pulsed power amplifier tube are transmitted to an antenna where they are radiated as signals with circular polarizations of opposite direction. In one embodiment interstage circuitry between the amplifiers and the antenna includes a magic "T" hybrid and a 90.degree. phase shifter.

Abstract: Flow of fluid through a heated electrically conductive conduit is measured by detecting changes in resistance of the conduit caused by the flow. A resistance bridge is connected to spaced points along the conduit for performing the measurement.

Abstract: There is disclosed a system for demultiplexing and storing time division multiplexed frames of musical data encoded ina bi-phase mark/space code. Data in sequential groups of data bit cells is stored in a shift register while a counter counts the data bit cells. A plurality of latch circuits, each capable of storing one said group of data, are sequentially enabled to receive and store the data, in the groups, respectively. After all of the data bit cells in a given time frame are stored, they are simultaneously gated to transistor driver circuits for operating solenoids which, in turn, re-create the music.

Abstract: Apparatus for measuring the flow of fluid through a main supply line having a restrictive element therein to develop a pressure drop. A shunt fluid flow path bypasses this element. The shunt path includes a conduit having a first electrically heated portion and an unheated portion, each portion respectively having a temperature sensing device associated therewith. Means are provided for varying the voltage supplied to an electrical heater for the first conduit portion to maintain a constant temperature difference between the temperature sensing devices, the amount of voltage supplied being a function of the characteristics of fluid flow through the main supply line.

Abstract: A filter network for use with an acoustic signal reproduction system having at least two, spatially separable, speaker means each capable of reproducing acoustic waves from corresponding electrical signal. The network includes a frequency divider for separating an electrical signal representative of acoustic waves into first and second components, the first component including primarily those audio frequencies, which when acoustically reproduced tend to provide unambiguous binaural phase localization. The second component includes primarily those audio frequencies which when acoustically reproduced tend not to provide unambiguous binaural phase localization.